I recently tested the Morningside Dress Pattern for Sarah of French Navy Patterns. I do love a shirt dress and this had a few features that aren't on my other patterns. The first is the hidden placket, the pattern has great instructions for it if you have never made one before. I really like the dropped shoulders and fold up sleeves. It also has great pockets which are sewn to the front so they don't flop around everywhere.
great round up here of all the other tester shirts and dresses so you can see all the different versions of this pattern.